<template>
  <div>
    <transition name="move">
      <div v-show="showFlag" class="food" ref="food">
        <div>
          <div class="food-content">
            <div class="image-header">
              <img :src="food.image">
              <div class="back" @click="showFlag = false;">
                <i class="icon-arrow_lift"></i>
              </div>
            </div>
            <div class="content">
              <h1 class="title">{{food.name}}</h1>
              <div class="detail">
                <span class="sell-count">月售{{food.sellCount}}份</span>
                <span class="rating">好评率{{food.rating}}%</span>
              </div>
              <div class="price">
                <span class="now">￥{{food.price}}</span><span class="old" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
              </div>
              <div class="cartcontrol-wrapper">
                <cartcontrol :food="food" @add-cart="emitAdd"></cartcontrol>
              </div>
              <transition name="fade">
                <div class="buy" v-show="!food.count" @click.stop.prevent="add">加入购物车</div>
              </transition>
            </div>
          </div>
          <split v-show="food.info"></split>
          <div class="info" v-show="food.info">
            <div class="title">商品信息</div>
            <p class="text">{{food.info}}</p>
          </div>
          <split></split>
          <div class="rating">
            <h1 class="title">商品评价</h1>
            <ratingselect :select-type="selectType" :only-content="onlyContent" :desc="desc" :ratings="food.ratings" @select-type-change="selectTypeChange" @only-content-toggle="onlyContentToggle"></ratingselect>
            <div class="rating-wrapper">
              <ul v-show="food.ratings && food.ratings.length">
                <li v-for="(rating, index) of food.ratings" :key="index" class="rating-item" v-show="needShow(rating.rateType, rating.text)">
                  <div class="user">
                    <span class="name">{{rating.username}}</span>
                    <img class="avatar" width="12" height="12" :src="rating.avatar">
                  </div>
                  <div class="time">{{rating.rateTime | formatDate}}</div>
                  <p class="text">
                    <span :class="{'icon-thumb_up': rating.rateType === 0, 'icon-thumb_down': rating.rateType === 1}"></span>{{rating.text}}
                  </p>
                </li>
              </ul>
              <div class="no-rating" v-show="needShowNoRating()">暂无评价</div>
            </div>
          </div>
        </div>
      </div>
    </transition>
  </div>
</template>

<script type="text/ecmascript-6">
  import BScroll from 'better-scroll';
  import cartcontrol from 'components/cartcontrol/cartcontrol.vue';
  import Vue from 'vue';
  import split from 'components/split/split.vue';
  import ratingselect from 'components/ratingselect/ratingselect.vue';
  import {formatDate} from 'common/js/date.js';

  const SELECT_TYPE = {POSITIVE: 0, NEGATIVE: 1, ALL: 2};

  export default {
    components: {cartcontrol, split, ratingselect},
    data () {
      return {
        showFlag: false,
        selectType: SELECT_TYPE.ALL,
        onlyContent: false,
        desc: {all: '全部', positive: '推荐', negative: '吐槽'}
      };
    },
    props: {
      food: {type: Object}
    },
    methods: {
      selectTypeChange (type) {
        this.selectType = type;
        this.$nextTick(() => {
          this.scroll.refresh();
        });
      },
      onlyContentToggle (onlyContent) {
        this.onlyContent = onlyContent;
        this.$nextTick(() => {
          this.scroll.refresh();
        });
      },
      show () {
        this.showFlag = true;
        this.selectType = SELECT_TYPE.ALL;
        this.onlyContent = false;
        this.$nextTick(() => {
          if (!this.scroll) this.scroll = new BScroll(this.$refs.food, {click: true});
          else this.scroll.refresh();
        });
      },
      add (event) {
        if (!event._constructed) return;
        Vue.set(this.food, 'count', 1);
        this.emitAdd(event.target);
      },
      emitAdd (el) {
        this.$emit('add', el);
      },
      needShow (rateType, text) {
        if (this.onlyContent && !text) return false;
        if (this.selectType === SELECT_TYPE.ALL) return true;
        return rateType === this.selectType;
      },
      needShowNoRating () {
        if (!this.food.ratings) return true;
        const ratings = this.food.ratings.filter((rating) => {
          if (this.onlyContent && !rating.text) return false;
          if (this.selectType === SELECT_TYPE.ALL) return true;
          return rating.rateType === this.selectType;
        });
        return ratings.length === 0;
      }
    },
    filters: {
      formatDate (time) {
        const date = new Date(time);
        return formatDate(date, 'yyyy-MM-dd HH:mm');
      }
    }
  };
</script>

<style type="text/stylus" lang="stylus">
  @import "../../common/stylus/mixin.styl";
  .food
    position fixed
    left 0
    top 0
    bottom 48px
    z-index 30
    width 100%
    background-color #fff
    &.move-enter-active, &.move-leave-active
      transition all .3s linear
    &.move-enter, &.move-leave-active
      transform translate3d(100%, 0, 0)
    .image-header
      position relative
      width 100%
      height 0
      padding-top 100%
      img
        position absolute
        top 0
        left 0
        width 100%
        height 100%
      .back
        position absolute
        top 10px
        left 0
        .icon-arrow_lift
          display block
          padding 10px
          font-size 20px
          color #fff
    .content
      position relative
      padding 18px
      .title
        line-height 14px
        margin-bottom 8px
        font-size 14px
        font-weight 700
        color rgb(7, 17, 27)
      .detail
        margin-bottom 18px
        line-height 10px
        height 10px
        font-size 0
        .sell-count, .rating
          font-size 10px
          color rgb(147, 153, 159)
        .sell-count
          margin-right 12px
      .price
        font-weight 700
        line-height 24px
        .now
          margin-right 8px
          font-size 14px
          color rgb(240, 20, 20)
        .old
          text-decoration line-through
          font-size 10px
          color rgb(147, 153, 159)
      .cartcontrol-wrapper
        position absolute
        right 12px
        bottom 12px
      .buy
        position absolute
        right 18px
        bottom 18px
        z-index 10
        height 24px
        line-height 24px
        padding 0 12px
        box-sizing border-box
        border-radius 12px
        font-size 10px
        color #fff
        background-color rgb(0, 160, 220)
        opacity 1
        &.fade-enter-active, &.fade-leave-active
          transition all .3s linear;
        &.fade-enter, &.fade-leave-active
          opacity 0
    .info
      padding 18px
      .title
        line-height 18px
        margin-bottom 6px
        font-size 14px
        color rgb(7, 17, 27)
      .text
        line-height 24px
        padding 0 8px
        font-size 12px
        color rgb(77, 85, 93)
    .rating
      padding-top 18px
      .title
        line-height 14px
        margin-left 18px
        font-size 14px
        color rgb(7, 17, 27)
      .rating-wrapper
        padding 0 18px
        .rating-item
          position relative
          padding 16px 0
          border-1px(rgba(7, 17, 27, .1))
          .user
            position absolute
            right 0
            top 16px
            line-height 12px
            font-size 0
            .name
              display inline-block
              vertical-align top
              margin-right 6px
              font-size 10px
              color rgb(147, 153, 159)
            .avatar
              border-radius 50%
          .time
            margin-bottom 6px
            line-height 12px
            font-size 10px
            color rgb(147, 153, 159)
          .text
            line-height 16px
            font-size 12px
            color rgb(7, 17, 27)
            .icon-thumb_up, .icon-thumb_down
              margin-right 4px
              line-height 16px
              font-size 12px
            .icon-thumb_up
              color rgb(0, 160, 220)
            .icon-thumb_down
              color rgb(147, 153, 159)
        .no-rating
          padding 16px 0
          font-size 12px
          color rgb(147, 153, 159)
</style>
